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Gas Chromatograph - Mass Spectrometer

Gas Chromatograph – Mass Spectrometer - TTGCMS1000

Application

Gas chromatography–mass spectrometry (GC-MS) is an analytical method that combines the features of gas-chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC-MS include drug detection, fire investigation, environmental analysis, explosives investigation, and identification of unknown samples. GC-MS can also be used in airport security to detect substances in luggage or on human beings. Additionally, it can identify trace elements in materials that were previously thought to have disintegrated beyond identification. Like liquid chromatography–mass spectrometry, it allows analysis and detection even of tiny amounts of a substance.

The GC-MS is composed of two major building blocks: the gas chromatograph and the mass spectrometer. The gas chromatograph utilizes a capillary column which depends on the column's dimensions (length, diameter, film thickness) as well as the phase properties. The difference in the chemical properties between different molecules in a mixture and their relative affinity for the stationary phase of the column will promote separation of the molecules as the sample travels the length of the column. The molecules are retained by the column and then elute from the column at different times (called the retention time), and this allows the mass spectrometer downstream to capture, ionize, accelerate, deflect, and detect the ionized molecules separately. The mass spectrometer does this by breaking each molecule into ionized fragments and detecting these fragments using their mass-to-charge ratio.

These two components, used together, allow a much finer degree of substance identification than either unit used separately. It is not possible to make an accurate identification of a particular molecule by gas chromatography or mass spectrometry alone. The mass spectrometry process normally requires a very pure sample while gas chromatography using a traditional detector (e.g. Flame ionization detector) cannot differentiate between multiple molecules that happen to take the same amount of time to travel through the column, which results in two or more molecules that co-elute. Sometimes two different molecules can also have a similar pattern of ionized fragments in a mass spectrometer. Combining the two processes reduces the possibility of error, as it is extremely unlikely that two different molecules will behave in the same way in both a gas chromatograph and a mass spectrometer. Therefore, when an identifying mass spectrum appears at a characteristic retention time in a GC-MS analysis, it typically increases certainty that the analyte of interest is in the sample.

Torontech TTGCMS1000 is cost effective gas chromatograph mass spectrometer widely used in industrial inspection, food hygiene, environmental protection, as well as:

  • Industrial inspection: Textile, Electricity & Electronics, Plastic, Cement, Cosmetics
  • Food hygiene: Pesticides residues, Flavors and fragrances
  • Environmental protection: Air, Water, Soil, Solid waste
  • Pharmaceutical: Pharmaceutical industries, Drug inspection
  • Petrochemical: Oil refineries, Chemical plants
  • Public security organizations: Explosive, Forensics evidence

Features

  • Superior quality: High end core parts which ensures high quality of TTGCMS1000
  • Meeting high demands: Torontech provides necessary parts to meet multiple application from customers around the globe
  • User friendly design: Facilitates easy operation and convenient maintenance
  • High-efficiency ionization source: Modular design having high ionization efficiency, and enhancing sensitivity
  • ToronAnalyst Software: Convenient operation, data acquisition and processing

Technical Specification

Model

TTGCMS1000

 

 

Gas Chromatograph (GC) specifications

 

Inlet temperature

Max. 450oC

Pressure range

0-100psi, ±0.002psi

Pressure control mode

Electronic pressure control (EPC), support CV and CC

Split mode

Split/split-less, max. Split ratio: 1000:1

Column oven working temperature

Room temperature+4℃~450oC

Heating rate

Up to 120oC/min

Temperature programming

7 stages/ 8 platforms

Auto sampler

Optional

Standard configuration

 

 

 

Mass Spectrometer (MS) specifications

 

EL source ionization energy

5 eV - 250 eV (adjustable)

Mass range

1.5- 1000amu

Resolution

Unit resolution (full width at half maximum)

Ion source temperature

100—350oC

Filament emission current

0-350μA

GC-MS interface temperature

Max. 450o C

Stability

±0.10 amu/48 hrs

Sensitivity

Full scan, 1pg OFN at m/z 272 with S/N ≥30:1 (RMS)

Scan rate

Up to 10000 amu/s

Vacuum

Turbo molecular pump(67 L/s)

Detector

High-energy dynode electron multiplier

 

 

Standard configuration

Gas Chromatograph (GC)

1) Injection port: split/split-less Injection port

2)Electronic Pressure/Flow control system (EPC/EFC)

Mass Spectrometer (MS)

1)Power and Control system

2)Turbo molecular pump: Pumping speed  67L/s

3)Rotary pump:1unit,Pumping speed 5m3/h, one bottle pump oil

4)Full scale cold cathode gauge,Scale:atmosphere~10-8mbar

5)EI source with double filaments

6)Metal molybdenum quadrupole with Pre-quad

7)RF Generator

8)High-energy dynode electron multiplier

9)Chem Analyst software

Standard Fitting Kit:

1)Tool Kit: EI source, Injection Port, Tools for Column

2)Consumables:a) Syringe, b) Injection Septum, c) Splitless Liner, d) Split Liner, e) Vesper Ferrule, f) Column, g) Column Cutter, h) O-ring, i) EI Filament, j) Silica wool, k) Moisture Trap, L) Oxygen Trap

3)Introduction Disc, Warranty, etc.

4)Power cable, Network cable, Fuse, etc.